i need a part for the cooker had a look at connect but can not see part on drawing. Spoke to servast not much help. the i need is a small grey box it has 4 wires to it, to acces it you have to remove burners and lift top off, 2 of the wires connect to the main oven selector. i have ordered about 3 years ago but have looked at my past recordes but cant find it. i need the part No please.